A magnitude-6.8 earthquake shook eastern and northeastern Japan on Sunday. With a depth of nearly 217 miles, its epicenter was southwest of the country's Izu islands, and it occurred at about 2:28 p.m. local time (5:28 GMT), the U.S. Geological Survey reported.

Reuters reported via The Times of India that there were no immediate reports of injuries or damages. No tsunami warning was issued.

The report noted the earthquake measured 4 in central Tokyo, Fukushima, and surrounding areas on the Japanese intensity scale, which measures ground motion, according to Japan Meteorological Agency. The agency uses a different measuring system than that of the USGS.

No abnormalities were reported at the Fukushima Daiichi nuclear power plant, which was heavily damaged by a powerful tsunami that was triggered by an earthquake last March 11. The magnitude-9.0 quake struck off Japan's northeastern coast, and it was the strongest in the country's history. The massive tsunami that then damaged the nuclear plant led to the world's worst nuclear crisis since the Chernobyl disaster in the former Soviet Union in 1986.

Because of the March earthquake and tsunami, an estimated 23,000 people were reported dead or missing, and there was billions of dollars in damage.

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